Mercurial > repos > blastem
annotate cdimage.c @ 2274:bf1bb893f104
Properly ignore low bits of SP start address in disassembler
author | Michael Pavone <pavone@retrodev.com> |
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date | Thu, 29 Dec 2022 22:44:35 -0800 |
parents | 646d1797f20d |
children | 9ead0fe69d9b |
rev | line source |
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1 #include <ctype.h> |
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2 #include <string.h> |
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3 #include <stdlib.h> |
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4 |
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5 #include "system.h" |
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6 #include "util.h" |
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7 |
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8 static char* cmd_start(char *cur) |
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9 { |
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10 while (*cur && isblank(*cur)) |
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11 { |
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12 cur++; |
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13 } |
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14 return cur; |
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15 } |
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16 |
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17 static char* cmd_start_sameline(char *cur) |
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18 { |
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19 while (*cur && isblank(*cur) && *cur != '\n') |
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20 { |
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21 cur++; |
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22 } |
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23 return cur; |
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24 } |
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25 |
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26 static char* word_end(char *cur) |
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27 { |
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28 while (*cur && !isblank(*cur)) |
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29 { |
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30 cur++; |
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31 } |
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32 return cur; |
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33 } |
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34 |
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35 static char* next_line(char *cur) |
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36 { |
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37 while (*cur && *cur != '\n') |
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38 { |
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39 cur++; |
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40 } |
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41 if (*cur) { |
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42 return cur + 1; |
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43 } |
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44 return NULL; |
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45 } |
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46 |
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47 static char* next_blank(char *cur) |
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48 { |
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49 while (*cur && !isblank(*cur)) |
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50 { |
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51 cur++; |
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52 } |
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53 return cur; |
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54 } |
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55 |
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56 static uint32_t timecode_to_lba(char *timecode) |
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57 { |
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58 char *end; |
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59 int seconds = 0, minutes = 0; |
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60 int frames = strtol(timecode, &end, 10); |
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61 if (end && *end == ':') { |
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62 timecode = end + 1; |
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63 seconds = frames; |
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64 frames = strtol(timecode, &end, 10); |
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65 if (end && *end == ':') { |
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66 minutes = seconds; |
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67 seconds = frames; |
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68 timecode = end + 1; |
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69 frames = strtol(timecode, NULL, 10); |
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70 } |
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71 } |
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72 seconds += minutes * 60; |
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73 return seconds * 75 + frames; |
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74 |
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75 } |
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76 |
2080 | 77 enum { |
78 FAKE_DATA = 1, | |
79 FAKE_AUDIO, | |
80 }; | |
81 | |
82 static uint8_t bin_seek(system_media *media, uint32_t sector) | |
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83 { |
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84 media->cur_sector = sector; |
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85 uint32_t lba = sector; |
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86 uint32_t track; |
2080 | 87 for (track = 0; track < media->num_tracks; track++) |
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88 { |
2080 | 89 if (lba < media->tracks[track].fake_pregap) { |
90 media->in_fake_pregap = media->tracks[track].type == TRACK_DATA ? FAKE_DATA : FAKE_AUDIO; | |
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91 break; |
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92 } |
2080 | 93 lba -= media->tracks[track].fake_pregap; |
94 if (lba < media->tracks[track].start_lba) { | |
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95 if (media->tracks[track].fake_pregap) { |
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96 media->in_fake_pregap = media->tracks[track].type == TRACK_DATA ? FAKE_DATA : FAKE_AUDIO; |
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97 } else { |
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98 media->in_fake_pregap = 0; |
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99 } |
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100 break; |
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101 } |
2080 | 102 if (lba < media->tracks[track].end_lba) { |
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103 media->in_fake_pregap = 0; |
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104 break; |
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105 } |
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106 } |
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107 if (track < media->num_tracks) { |
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108 media->cur_track = track; |
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109 if (!media->in_fake_pregap) { |
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110 if (track) { |
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111 lba -= media->tracks[track - 1].end_lba; |
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112 } |
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113 if (media->tracks[track].has_subcodes) { |
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114 if (!media->tmp_buffer) { |
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115 media->tmp_buffer = calloc(1, 96); |
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116 } |
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117 fseek(media->tracks[track].f, media->tracks[track].file_offset + (lba + 1) * media->tracks[track].sector_bytes - 96, SEEK_SET); |
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118 int bytes = fread(media->tmp_buffer, 1, 96, media->tracks[track].f); |
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119 if (bytes != 96) { |
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120 fprintf(stderr, "Only read %d subcode bytes\n", bytes); |
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121 } |
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122 } |
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123 fseek(media->tracks[track].f, media->tracks[track].file_offset + lba * media->tracks[track].sector_bytes, SEEK_SET); |
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124 } |
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125 } |
2080 | 126 return track; |
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127 } |
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128 |
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129 static uint8_t fake_read(uint32_t sector, uint32_t offset) |
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130 { |
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131 if (!offset || offset == 11 || (offset >= 16)) { |
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132 return 0; |
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133 //TODO: error detection and correction bytes |
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134 } else if (offset < 11) { |
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135 return 0xFF; |
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136 } else if (offset == 12) { |
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137 uint32_t minute = (sector / 75) / 60; |
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138 return (minute % 10) | ((minute / 10 ) << 4); |
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139 } else if (offset == 13) { |
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140 uint32_t seconds = (sector / 75) % 60; |
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141 return (seconds % 10) | ((seconds / 10 ) << 4); |
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142 } else if (offset == 14) { |
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143 uint32_t frames = sector % 75; |
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144 return (frames % 10) | ((frames / 10 ) << 4); |
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145 } else { |
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146 return 1; |
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147 } |
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148 } |
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149 |
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150 static uint8_t bin_read(system_media *media, uint32_t offset) |
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151 { |
2080 | 152 if (media->in_fake_pregap == FAKE_DATA) { |
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153 return fake_read(media->cur_sector, offset); |
2080 | 154 } else if (media->in_fake_pregap == FAKE_AUDIO) { |
155 return 0; | |
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156 } else if ((media->tracks[media->cur_track].sector_bytes < 2352 && offset < 16) || offset > (media->tracks[media->cur_track].sector_bytes + 16)) { |
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157 return fake_read(media->cur_sector, offset); |
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158 } else { |
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159 if (media->tracks[media->cur_track].need_swap) { |
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160 if (offset & 1) { |
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161 return media->byte_storage; |
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162 } |
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163 media->byte_storage = fgetc(media->tracks[media->cur_track].f); |
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164 } |
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165 return fgetc(media->tracks[media->cur_track].f); |
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166 } |
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167 } |
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168 |
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169 static uint8_t bin_subcode_read(system_media *media, uint32_t offset) |
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170 { |
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171 if (media->in_fake_pregap || !media->tracks[media->cur_track].has_subcodes) { |
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172 //TODO: Fake PQ subcodes |
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173 return 0; |
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174 } |
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175 //TODO: Translate "cooked" subcodes back to raw format |
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176 return media->tmp_buffer[offset]; |
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177 } |
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178 |
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179 uint8_t parse_cue(system_media *media) |
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180 { |
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181 char *line = media->buffer; |
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182 media->num_tracks = 0; |
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183 do { |
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184 char *cmd = cmd_start(line); |
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185 if (cmd) { |
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186 if (startswith(cmd, "TRACK ")) { |
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187 media->num_tracks++; |
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188 } |
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189 line = next_line(cmd); |
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190 } else { |
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191 line = NULL; |
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192 } |
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193 } while (line); |
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194 track_info *tracks = calloc(sizeof(track_info), media->num_tracks); |
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195 media->tracks = tracks; |
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196 line = media->buffer; |
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197 int track = -1; |
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198 uint8_t audio_byte_swap = 0; |
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199 FILE *f = NULL; |
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200 int track_of_file = -1; |
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201 uint8_t has_index_0 = 0; |
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202 do { |
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203 char *cmd = cmd_start(line); |
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204 if (*cmd) { |
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205 if (startswith(cmd, "TRACK ")) { |
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206 track++; |
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207 track_of_file++; |
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208 has_index_0 = 0; |
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209 cmd += 6; |
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210 char *end; |
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211 int file_track = strtol(cmd, &end, 10); |
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212 if (file_track != (track + 1)) { |
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213 warning("Expected track %d, but found track %d in CUE sheet\n", track + 1, file_track); |
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214 } |
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215 tracks[track].f = f; |
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216 |
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217 |
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218 cmd = cmd_start(end); |
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219 if (*cmd) { |
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220 if (startswith(cmd, "AUDIO")) { |
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221 tracks[track].type = TRACK_AUDIO; |
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222 tracks[track].need_swap = audio_byte_swap; |
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223 tracks[track].sector_bytes = 2352; |
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224 } else { |
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225 tracks[track].type = TRACK_DATA; |
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226 tracks[track].need_swap = 0; |
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227 tracks[track].sector_bytes = 0; |
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228 char *slash = strchr(cmd, '/'); |
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229 if (slash) { |
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230 tracks[track].sector_bytes = atoi(slash+1); |
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231 } |
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232 if (!tracks[track].sector_bytes) { |
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233 warning("Missing sector size for data track %d in cue", track + 1); |
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234 tracks[track].sector_bytes = 2352; |
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235 } |
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236 } |
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237 |
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238 } |
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239 } else if (startswith(cmd, "FILE ")) { |
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240 cmd += 5; |
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241 cmd = strchr(cmd, '"'); |
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242 if (cmd) { |
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243 cmd++; |
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244 char *end = strchr(cmd, '"'); |
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245 if (end) { |
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246 char *fname; |
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247 //TODO: zipped BIN/CUE support |
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248 if (is_absolute_path(cmd)) { |
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249 fname = malloc(end-cmd + 1); |
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250 memcpy(fname, cmd, end-cmd); |
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251 fname[end-cmd] = 0; |
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252 } else { |
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253 size_t dirlen = strlen(media->dir); |
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254 fname = malloc(dirlen + 1 + (end-cmd) + 1); |
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255 memcpy(fname, media->dir, dirlen); |
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256 fname[dirlen] = PATH_SEP[0]; |
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257 memcpy(fname + dirlen + 1, cmd, end-cmd); |
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258 fname[dirlen + 1 + (end-cmd)] = 0; |
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259 } |
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260 f = fopen(fname, "rb"); |
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261 if (!f) { |
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262 fatal_error("Failed to open %s specified by FILE command in CUE sheet %s.%s\n", fname, media->name, media->extension); |
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263 } |
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264 free(fname); |
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265 track_of_file = -1; |
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266 for (end++; *end && *end != '\n' && *end != '\r'; end++) |
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267 { |
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268 if (!isspace(*end)) { |
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269 if (startswith(end, "BINARY")) { |
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270 audio_byte_swap = 0; |
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271 } else if (startswith(end, "MOTOROLA")) { |
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272 audio_byte_swap = 1; |
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273 } else { |
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274 warning("Unsupported FILE type in CUE sheet. Only BINARY and MOTOROLA are supported\n"); |
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275 } |
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276 break; |
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277 } |
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278 } |
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279 } |
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280 } |
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281 } else if (track >= 0) { |
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282 if (startswith(cmd, "PREGAP ")) { |
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283 tracks[track].fake_pregap = timecode_to_lba(cmd + 7); |
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284 } else if (startswith(cmd, "INDEX ")) { |
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285 char *after; |
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286 int index = strtol(cmd + 6, &after, 10); |
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287 uint8_t has_start_lba = 0; |
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288 uint32_t start_lba; |
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289 if (!index) { |
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290 tracks[track].pregap_lba = start_lba = timecode_to_lba(after); |
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291 has_index_0 = 1; |
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292 has_start_lba = 1; |
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293 } else if (index == 1) { |
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294 tracks[track].start_lba = timecode_to_lba(after); |
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295 if (!has_index_0) { |
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296 start_lba = tracks[track].start_lba; |
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297 if (!tracks[track].fake_pregap) { |
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298 tracks[track].pregap_lba = start_lba; |
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299 } |
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300 has_start_lba = 1; |
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301 } |
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302 } |
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303 if (has_start_lba) { |
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304 if (track > 0) { |
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305 tracks[track-1].end_lba = start_lba; |
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306 } |
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307 if (track_of_file > 0) { |
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308 tracks[track].file_offset = tracks[track-1].file_offset + tracks[track-1].end_lba * tracks[track-1].sector_bytes; |
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309 if (track_of_file > 1) { |
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310 tracks[track].file_offset -= tracks[track-2].end_lba * tracks[track-1].sector_bytes; |
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311 } |
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312 } else { |
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313 tracks[track].file_offset = 0; |
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314 } |
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315 } |
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316 } |
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317 } |
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318 if (cmd && *cmd) { |
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319 line = next_line(cmd); |
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320 } else { |
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321 line = NULL; |
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322 } |
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323 } else { |
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324 line = NULL; |
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325 } |
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326 } while (line); |
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327 if (media->num_tracks > 0 && media->tracks[0].f) { |
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328 //end of last track in a file is implictly based on the size |
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329 f = tracks[0].f; |
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330 uint32_t offset = 0; |
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331 for (int track = 0; track < media->num_tracks; track++) { |
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332 if (track == media->num_tracks - 1 && tracks[track].f) { |
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333 uint32_t start_lba =tracks[track].fake_pregap ? tracks[track].start_lba : tracks[track].pregap_lba; |
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334 tracks[track].end_lba = start_lba + (file_size(tracks[track].f) - tracks[track].file_offset)/ tracks[track].sector_bytes; |
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335 } else if (tracks[track].f != f) { |
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336 uint32_t start_lba =tracks[track-1].fake_pregap ? tracks[track-1].start_lba : tracks[track-1].pregap_lba; |
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337 tracks[track-1].end_lba = start_lba + (file_size(tracks[track-1].f) - tracks[track-1].file_offset)/ tracks[track-1].sector_bytes; |
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338 offset = tracks[track-1].end_lba; |
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339 } |
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340 if (!tracks[track].fake_pregap) { |
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341 tracks[track].pregap_lba += offset; |
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342 } |
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343 tracks[track].start_lba += offset; |
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344 tracks[track].end_lba += offset; |
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345 } |
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346 //replace cue sheet with first sector |
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347 free(media->buffer); |
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348 media->buffer = calloc(2048, 1); |
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349 if (tracks[0].type == TRACK_DATA && tracks[0].sector_bytes == 2352) { |
2062
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350 // if the first track is a data track, don't trust the CUE sheet and look at the MM:SS:FF from first sector |
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351 uint8_t msf[3]; |
2114
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352 fseek(tracks[0].f, 12, SEEK_SET); |
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353 if (sizeof(msf) == fread(msf, 1, sizeof(msf), tracks[0].f)) { |
2062
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Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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|
354 tracks[0].fake_pregap = msf[2] + (msf[0] * 60 + msf[1]) * 75; |
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Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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|
355 } |
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Fix some byte order stuff for audio tracks
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|
356 } else if (!tracks[0].start_lba && !tracks[0].fake_pregap) { |
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|
357 tracks[0].fake_pregap = 2 * 75; |
2062
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358 } |
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Some progress on CDC and CDD emulation. Now passes first 3 "CDC INIT" tests in mcd-verificator
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|
359 |
2116
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Initial stab at subcode emulation
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360 fseek(tracks[0].f, tracks[0].sector_bytes >= 2352 ? 16 : 0, SEEK_SET); |
2114
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361 media->size = fread(media->buffer, 1, 2048, tracks[0].f); |
2076
3f29e2726522
Added basic support for ISO images for games that only have a data track
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|
362 media->seek = bin_seek; |
3f29e2726522
Added basic support for ISO images for games that only have a data track
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363 media->read = bin_read; |
2116
cd057d6fe030
Initial stab at subcode emulation
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changeset
|
364 media->read_subcodes = bin_subcode_read; |
2059
6399a776e981
Add basic support for BIN/CUE images
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|
365 } |
2114
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366 uint8_t valid = media->num_tracks > 0 && media->tracks[0].f != NULL; |
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367 media->type = valid ? MEDIA_CDROM : MEDIA_CART; |
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368 return valid; |
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369 } |
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370 |
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|
371 uint8_t parse_toc(system_media *media) |
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372 { |
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373 char *line = media->buffer; |
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374 media->num_tracks = 0; |
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375 do { |
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376 char *cmd = cmd_start(line); |
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377 if (cmd) { |
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378 if (startswith(cmd, "TRACK ")) { |
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379 media->num_tracks++; |
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380 } |
2449c88cea36
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381 line = next_line(cmd); |
2449c88cea36
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382 } else { |
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383 line = NULL; |
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384 } |
2449c88cea36
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385 } while (line); |
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386 track_info *tracks = calloc(sizeof(track_info), media->num_tracks); |
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387 media->tracks = tracks; |
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388 line = media->buffer; |
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389 char *last_file_name = NULL; |
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390 FILE *f = NULL; |
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391 int track = -1; |
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392 do { |
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393 char *cmd = cmd_start(line); |
2449c88cea36
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394 if (*cmd) { |
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395 if (startswith(cmd, "TRACK ")) { |
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396 track++; |
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397 cmd = cmd_start(cmd + 6); |
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398 if (startswith(cmd, "AUDIO")) { |
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399 tracks[track].type = TRACK_AUDIO; |
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400 tracks[track].sector_bytes = 2352; |
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|
401 tracks[track].need_swap = 1; |
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402 } else { |
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403 tracks[track].type = TRACK_DATA; |
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changeset
|
404 tracks[track].need_swap = 0; |
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|
405 if (startswith(cmd, "MODE1_RAW") || startswith(cmd, "MODE2_RAW")) { |
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changeset
|
406 tracks[track].sector_bytes = 2352; |
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407 } else if (startswith(cmd, "MODE2_FORM2")) { |
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changeset
|
408 tracks[track].sector_bytes = 2324; |
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409 } else if (startswith(cmd, "MODE1") || startswith(cmd, "MODE2_FORM1")) { |
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Enhance support for CUE files and add initial support for cdrdao TOC files
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changeset
|
410 tracks[track].sector_bytes = 2048; |
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|
411 } else if (startswith(cmd, "MODE2")) { |
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Enhance support for CUE files and add initial support for cdrdao TOC files
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changeset
|
412 tracks[track].sector_bytes = 2336; |
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|
413 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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|
414 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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changeset
|
415 cmd = word_end(cmd); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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changeset
|
416 if (*cmd && *cmd != '\n') { |
2449c88cea36
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changeset
|
417 cmd = cmd_start_sameline(cmd); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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|
418 if (*cmd && *cmd != '\n') { |
2449c88cea36
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changeset
|
419 //TODO: record whether subcode is in raw format or not |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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changeset
|
420 if (startswith(cmd, "RW_RAW")) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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diff
changeset
|
421 tracks[track].sector_bytes += 96; |
2116
cd057d6fe030
Initial stab at subcode emulation
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2114
diff
changeset
|
422 tracks[track].has_subcodes = SUBCODES_RAW; |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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changeset
|
423 } else if (startswith(cmd, "RW")) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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changeset
|
424 tracks[track].sector_bytes += 96; |
2116
cd057d6fe030
Initial stab at subcode emulation
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changeset
|
425 tracks[track].has_subcodes = SUBCODES_COOKED; |
2114
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|
426 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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|
427 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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|
428 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
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|
429 if (track) { |
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changeset
|
430 tracks[track].start_lba = tracks[track].pregap_lba = tracks[track].end_lba = tracks[track-1].end_lba; |
2449c88cea36
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|
431 } |
2449c88cea36
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|
432 } else if (track >= 0) { |
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changeset
|
433 uint8_t is_datafile = startswith(cmd, "DATAFILE"); |
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changeset
|
434 if (is_datafile || startswith(cmd, "FILE")) { |
2449c88cea36
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|
435 |
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|
436 if (tracks[track].f) { |
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changeset
|
437 warning("TOC file has more than one file for track %d, only one is supported\n", track + 1); |
2449c88cea36
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changeset
|
438 } else { |
2140
6d0de02a068a
Fix bug in TOC parser
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2122
diff
changeset
|
439 cmd += is_datafile ? 8 : 4; |
2114
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|
440 char *fname_start = strchr(cmd, '"'); |
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|
441 if (fname_start) { |
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|
442 ++fname_start; |
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|
443 char *fname_end = strchr(fname_start, '"'); |
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|
444 if (fname_end) { |
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changeset
|
445 if (!last_file_name || strncmp(last_file_name, fname_start, fname_end-fname_start)) { |
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|
446 free(last_file_name); |
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|
447 last_file_name = calloc(1, 1 + fname_end-fname_start); |
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|
448 memcpy(last_file_name, fname_start, fname_end-fname_start); |
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|
449 char *fname; |
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|
450 //TODO: zipped BIN/TOC support |
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|
451 if (is_absolute_path(last_file_name)) { |
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|
452 fname = last_file_name; |
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|
453 } else { |
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changeset
|
454 size_t dirlen = strlen(media->dir); |
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Enhance support for CUE files and add initial support for cdrdao TOC files
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changeset
|
455 fname = malloc(dirlen + 1 + (fname_end-fname_start) + 1); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
456 memcpy(fname, media->dir, dirlen); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
457 fname[dirlen] = PATH_SEP[0]; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
458 memcpy(fname + dirlen + 1, fname_start, fname_end-fname_start); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
459 fname[dirlen + 1 + (fname_end-fname_start)] = 0; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
460 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
461 f = fopen(fname, "rb"); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
462 if (!f) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
463 fatal_error("Failed to open %s specified by DATAFILE command in TOC file %s.%s\n", fname, media->name, media->extension); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
464 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
465 if (fname != last_file_name) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
466 free(fname); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
467 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
468 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
469 tracks[track].f = f; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
470 cmd = fname_end + 1; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
471 cmd = cmd_start_sameline(cmd); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
472 if (*cmd == '#') { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
473 char *end; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
474 tracks[track].file_offset = strtol(cmd + 1, &end, 10); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
475 cmd = cmd_start_sameline(end); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
476 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
477 if (!is_datafile) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
478 if (isdigit(*cmd)) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
479 uint32_t start = timecode_to_lba(cmd); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
480 tracks[track].file_offset += start * tracks[track].sector_bytes; |
2149
9209858b2f74
Fix a couple of bugs in the TOC file parser
Michael Pavone <pavone@retrodev.com>
parents:
2143
diff
changeset
|
481 cmd = cmd_start_sameline(cmd); |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
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diff
changeset
|
482 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
483 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
484 if (isdigit(*cmd)) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
485 uint32_t length = timecode_to_lba(cmd); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
486 tracks[track].end_lba += length; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
487 } else { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
488 long fsize = file_size(f); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
489 tracks[track].end_lba += fsize - tracks[track].file_offset; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
490 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
491 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
492 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
493 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
494 } else if (startswith(cmd, "SILENCE")) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
495 cmd = cmd_start_sameline(cmd + 7); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
496 tracks[track].fake_pregap += timecode_to_lba(cmd); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
497 } else if (startswith(cmd, "START")) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
498 cmd = cmd_start_sameline(cmd + 5); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
499 tracks[track].start_lba = tracks[track].pregap_lba + timecode_to_lba(cmd); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
500 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
501 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
502 if (cmd && *cmd) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
503 line = next_line(cmd); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
504 } else { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
505 line = NULL; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
506 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
507 } else { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
508 line = NULL; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
509 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
510 } while (line); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
511 if (media->num_tracks > 0 && media->tracks[0].f) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
512 //replace cue sheet with first sector |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
513 free(media->buffer); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
514 media->buffer = calloc(2048, 1); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
515 if (tracks[0].type == TRACK_DATA && tracks[0].sector_bytes == 2352) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
516 // if the first track is a data track, don't trust the TOC file and look at the MM:SS:FF from first sector |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
517 uint8_t msf[3]; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
518 fseek(tracks[0].f, 12, SEEK_SET); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
519 if (sizeof(msf) == fread(msf, 1, sizeof(msf), tracks[0].f)) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
520 tracks[0].fake_pregap = msf[2] + (msf[0] * 60 + msf[1]) * 75; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
521 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
522 } else if (!tracks[0].start_lba && !tracks[0].fake_pregap) { |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
523 tracks[0].fake_pregap = 2 * 75; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
524 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
525 |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
526 fseek(tracks[0].f, tracks[0].sector_bytes == 2352 ? 16 : 0, SEEK_SET); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
527 media->size = fread(media->buffer, 1, 2048, tracks[0].f); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
528 media->seek = bin_seek; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
529 media->read = bin_read; |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2114
diff
changeset
|
530 media->read_subcodes = bin_subcode_read; |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
531 } |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
532 uint8_t valid = media->num_tracks > 0 && media->tracks[0].f != NULL; |
2061
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
2059
diff
changeset
|
533 media->type = valid ? MEDIA_CDROM : MEDIA_CART; |
7c1760b5b3e5
Implemented basic TOC functionality of CDD MCU
Michael Pavone <pavone@retrodev.com>
parents:
2059
diff
changeset
|
534 return valid; |
2059
6399a776e981
Add basic support for BIN/CUE images
Michael Pavone <pavone@retrodev.com>
parents:
diff
changeset
|
535 } |
2076
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
536 |
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
537 uint32_t make_iso_media(system_media *media, const char *filename) |
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
538 { |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
539 FILE *f = fopen(filename, "rb"); |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
540 if (!f) { |
2076
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
541 return 0; |
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
542 } |
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
543 media->buffer = calloc(2048, 1); |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
544 media->size = fread(media->buffer, 1, 2048, f); |
2079
5a2b759f6b2d
BIOS doesn't like it if TOC read happens too quickly
Michael Pavone <pavone@retrodev.com>
parents:
2076
diff
changeset
|
545 media->num_tracks = 1; |
5a2b759f6b2d
BIOS doesn't like it if TOC read happens too quickly
Michael Pavone <pavone@retrodev.com>
parents:
2076
diff
changeset
|
546 media->tracks = calloc(sizeof(track_info), 1); |
2076
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
547 media->tracks[0] = (track_info){ |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
548 .f = f, |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
549 .file_offset = 0, |
2076
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
550 .fake_pregap = 2 * 75, |
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
551 .start_lba = 0, |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
552 .end_lba = file_size(f), |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
553 .sector_bytes = 2048, |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2114
diff
changeset
|
554 .has_subcodes = SUBCODES_NONE, |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
555 .need_swap = 0, |
2076
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
556 .type = TRACK_DATA |
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
557 }; |
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
558 media->type = MEDIA_CDROM; |
2114
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
559 media->seek = bin_seek; |
2449c88cea36
Enhance support for CUE files and add initial support for cdrdao TOC files
Michael Pavone <pavone@retrodev.com>
parents:
2089
diff
changeset
|
560 media->read = bin_read; |
2116
cd057d6fe030
Initial stab at subcode emulation
Michael Pavone <pavone@retrodev.com>
parents:
2114
diff
changeset
|
561 media->read_subcodes = bin_subcode_read; |
2076
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
562 return media->size; |
3f29e2726522
Added basic support for ISO images for games that only have a data track
Michael Pavone <pavone@retrodev.com>
parents:
2074
diff
changeset
|
563 } |